I really like GameFly. It's expensive, but I like being able to play newer games, and return them if they're bad. Also, they let you buy the game if you end up liking it, and even new releases can be discounted a little bit. Plus, I get 10% off the used price, and every month they send me a $5 off coupon. It's even better with older games. I've gotten some pretty good deals on older games.